Method of displaying graphic images

Abstract

A method for viewing images comprises: providing a user interactive image file viewing device 100; segmenting an image file 200 by establishing an offset, a line size, and a step size 201, the offset and line size relating to a first dimension (horizontal) and the step size relating to a second dimension (vertical) being orthogonal to the first dimension, the step size comprises a fixed number of lines, iteratively reading the segment into memory line by line beginning at the offset, until the step size is reached 202. In this manner, the sub-part of an image may be efficiently accessed without having to read the entire image into memory.

Description

CROSS REFERENCE TO RELATED APPLICATIONS [0001]60 / 885,925CLAIM OF PRIORITY BASED ON COPENDING APPLICATION [0002]Claims benefit of provisional application No. 60 / 885,925, filed on Jan. 22, 2007.FEDERALLY SPONSORED RESEARCH [0003]Not ApplicableSEQUENCE LISTING, TABLE, OR COMPUTER PROGRAM COMPACT DISK APPENDIX [0004]Not Applicable[0005]The present application is related to the co-pending provisional patent application No. 60 / 885,925, filed on Jan. 22, 2007, of Dennis Megarry, et al., entitled “Method Of Displaying Graphic Images”, and based on which priority is herewith claimed under 35 U.S.C. 119(e) and the disclosure of which is incorporated herein by reference in its entirety as if fully rewritten herein.BACKGROUND AND SUMMARY[0006]This invention relates to digital electronic display and document viewing technology, such as the scanning, compression, and dynamic display of charts, graphs, printed documents, and photographs. Particularly, aviation related (FAA-Federal Aviation Adminis...

AI Technical Summary

Benefits of technology

[0011]The image width (horizontal) is the length of the scan-line. A horizontal offset (assuming upper left orientation) allows horizontally changing the viewed image. Thus, any rectangle can be extracted from the image by reading a scan line portion and repeating that until the end of the step (vertical) is reached. The foregoing allows for large files, such as raster image files, to be used on small hand held devices. This is pa

Problems solved by technology

Average images used in GIS (Geographic Information System) applications are relatively large and do not fit onto smaller devices, at least in raw format.

In electronic display formats, light conditions, such as direct sunlight, interfere with reading.

Finally, applications running in smaller electronic formats using conventional vector technology require manipulation of often unmanageably large data sets so may be slow and cumbersome in use.

In addition, vector images often suffer in the quality of the image delivered to the viewer.

On average, the images used in a GIS are relatively large and cannot fit on small devices such as the iRex® e-reader (iRex Technologies BV, Eindhoven, the Netherlands) in raw form.

Images